Plastic Shoes Are Trending—But Are They Bad for Your Health?

"The foot by itself [without a sock] in a shoe, plastic or not, provides a perfect milieu for bacterial and fungal growth. It is moist, dark, and there is heat. The combination of those three things make a foot inside a shoe a dangerous place," said Dr. Positano.

He noted that plastic shoes do not provide flexibility and shock absorption, which could lead to a number of musculoskeletal issues.

"Let’s face it, it’s not a Cinderella shoe. It’s the one way to not go to the prom," he noted.